For seven consecutive sessions, open interest in E-mini Nasdaq 100 futures has set new records on the CME, beginning with 27,355 open positions on May 30 and reaching a record 30,741 at the close of trading on Wednesday, June 7. The new open interest record for E-mini S&P 500 futures totaled 45,128, surpassing the 44,944 mark set on June 2.
Open interest measures of the number of futures or options outstanding, or held open, after the close of trading each day.
Traded electronically on the CME's GLOBEX®2 electronic trading system, both contracts are smaller-sized versions of contracts traded actively via open outcry on the exchange's trading floor. These contracts trade virtually around the clock from 3:45 p.m. until 3:15 p.m. the following day.
